Outfit for sewing filled sacks and like articles



Oct- 10 1933- I. F. WEBB 1,930,215

OUTFIT FOR SEWING FILLED SACKS AND LIKE ARTICLES Filed June 14, 1952 3 Sheets-Sheet l I. F. WEBB Oct. 10 1933.

OUTFIT FOR SEWING FILLED SACKS AND LIKE ARTICLES Filed June 14, 1932 3 Sheets-Sheet 2 gwumtoc [r ring 17 Mb]? WW. @w

I. F. WEBB Oct. 10 1933.

OUTFIT FOR SEWING FILLED SACKS AND LIKE ARTICLES Filed June 14, 1932 3 Sheets-Sheet 3 Patented 0a. 10, 1933 UNITED STATES PATENT OFFICE OUTFIT FOR SEWING FILLED SACKS AND LIKE ARTICLES Irving F. Webb, Elizabeth, N. J., assignor to The Singer Manufacturing Company, Elizabeth, N. J., a corporation of New Jersey Application June 14, 1932. Serial No. 617,072

9 Claims. (Cl. 11211) provement, with the suspending cable partly' broken away and the cable-sheave hub partly in section. Fig. 2 is a rear side elevation, partly in section, of a portion of the sewing machine head and its supporting bracket, with the sewing machine cloth-plate removed. Fig. 3 is a vertical section of the sewing machine and motor supporting bracket substantially on the line 33 of Fig. 2.

Referring to the drawings, the present invention comprises a sewing machine head having a base 1, a bracket-arm 2 in the head of which is journaled a needle-bar carrying a needle 3, a presser-foot 4, and a feed-dog 5 opposed to the presser-foot. Any suitable mechanism complemental to the needle may be employedto form stitches, the general form ofithe sewing head frame and the specific type of stitch-forming mechanism selected being immaterial.

The sewing machine base 1 is vertically disposed, being detachably secured by screw-bolts 6 upon the substantially vertical outer face of one end-plate 7 of a supporting bracket of general horizontal-I shape and having an opposed endplate 8 connected with the end-plate 7 by a crossbar 9 reenforced by transverse webs'10. The needle thus reciprocates substantially horizontally to stitch work-plies which are vertically disposed.

Secured by screw-bolts 11 upon the outer vertical face of the bracket end-plate 8 is the vertically disposed base 12 of an electric-motor 13 havinga driving pulley 14 at the upper side of the motor frame rotatable about a vertical axis. The

motor-pulley 14 is connected by'a belt 15 with a' pulley 16 freely rotatable upon the main-shaft 17 of the sewing machine and disposed in sub-' stantially the same horizontal plane as the pulley 14. Adjacent to the loose pulley 16 is a combined pulley and balance-wheel 18 fast on the'machine shaft 17. To provide for shifting the belt 15 from one to the other of. said pulleys 16 and 18,

one of thebelt runs isstraddled by a fork comprising vertically spaced pins 19 projecting horizontally from an ear 20 of an angular belt-shipper lever21. The lever 21 has an arm 22 extending rearwardly crosswise of and above the bracket cross-bar 9, said arm terminating in an apertured boss 23 pivotally mounted upon a fulcrum-stud 24 secured upon the bracket-plate 7 by a setscrew 25. l

Extending upwardly from the lever-arm 22 is an arm 26 provided with a vertical guideway in which the member 27 of an angular brakeplate is adjustably secured by a screw 28. The other member 29 of the brake-plate has secured to its un er face a suitable friction-block. 30

overlying the fast pulley 18 of the sewing machine. A coil-spring 31 connected at its opposite ends with the belt-shipper lever 21 and the bracket-plate 7 acts to normally swing said lever into a position of engagement of the frictionpulley 16 of the sewing'machine and upon the fast pulley 18 thereof,- and at the same time lift the brake-block 30 from said pulley, 18. Upon release of the hand-rod 33, the spring 31 acts to return the belt to the loosepulley 16 and to apply the brake-block 30 to the fast pulley 18.

Suitably secured in alined apertures in the bracket end-plates 7 and'8 is a hand-bar 34 disposed directly above and preferably substantially parallel with the hand-rod 33. The hand-bar 34 may be grasped by one hand of an operator to control the position of the sewing machine, and owing to the disposition of the hand-rod 33 below and adjacent to the hand-bar 34, said handrod may be conveniently grasped by the fingers of the same hand to control the operation of the sewing machine, thus leaving the other hand free for manipulating the work.

Projecting from the rear side of the base 1 of the sewing machine is a forked bracket 35 having horizontally directed and vertically'spaced arms 36 and 37 provided with vertically elongated and alined slots 38 and 39. Movably disposed in said slots 38, 39 are guide-rollers 40 and 41 carried by oppositely directed arms of angular cutter-levers 42 and 43 which are pivotally connected in scissors fashion by a stud-screw 44. The levers 42, 43 have coacting cutting edges 45 and 46 and are disposed rearwardly of the feed-dog 5 in position to sever the thread-chain between successive work articles. Connected with the cutterlevers 42, 43 by the stud-screw 44 is one arm.4'l of a cutter-actuating lever fulcrumed upon the rear side of the sewing machine bracket arm by means of a pivot-stud 48. The other arm 49 is acted upon by a spring 50 to normally hold the cutter-levers in open position, said arm 49 having secured thereto by screws 51 an angular extension 52 overhanging the bracket-arm and terminating in a knob 53 positioned for convenient manipulation by the operators left hand. 7

The cross-bar 9 of the sewing machine and motor supporting bracket stantially midway between the bracket end-plates '7 and 8, which aperture is entered by a swivelhook 55 having its shank rotatably journaled in a vertically apertured swivel-block 56 provided with trunnions 57. The swivel-block 56 is'disposed between the depending fork-members 58 of a swivel-head 59, with the trunnions 57 pivotally entering alined apertures in said fork-members 58, said swivel-head 59 being vertically apertured to receive a depending end of a cable 60 which is preferably leaded fixedly to the head 59. The cable is passed over a sheave 61- and has suitably secured to its other end a counter-balancing weight 62, said sheave 61 preferably having a ball-bearing journal in a hanger 63 provided with a suspension-eye 64, whereby the hanger may be conveniently attached to a ceiling hook or to any suitable overhanging frame. 1

Suitably secured upon the cross-bar 9 of the sewing machine and motor bracket at the motor side of the swivel-hook 55 is a thread-supply stand comprising a bent rod 65 carrying a spool or cop supporting plate 66 and suitable threadguides 67 in a position overhanging the sewing machine. Adjustably disposed upon a horizontal portion of said rod 65 is a counterbalancing weight 68 which provides means for conveniently maintaining the balance of the sewing machine and motor supporting bracket as the weight of the'thre'ad-cops varies. A cable 69 containing the electric-current leads which are suitably connected with the motor is preferably secured, by clamps '70 to the supporting cable 60 between the sheave 61 and the swivel-head 59.

It will be apparent from the foregoing description that the outfit, including the cable and sheave may be readily suspended for use at any point in a factory convenient to thework to be stitched. For instance, when it is desired to close the mouths of filled sacks, the outfit maybe suspended at any sack-filling station or at any point of delivery of the filled sacks. By grasping the hand-bar 34, the sewing machine which is counterbalanced for pivotal and bodily vertical movements may be readily shifted into a position wherein one corner of the sack-mouth can be inserted under the presser-foot by the operator's left hand. By closing the right hand in a position thereof grasping both the hand-bar 34 and the hand-rod 33, the operation of the machine may be started and stopped at any time without sacrificing control of the position of the machine, it being evident that the machine head may be readily tilted in different directions upon the swivel-joint or swung swivel-hook in the swivel-block 56, or raised and lowered bodily, to suit the height and position of the sack and to obtain the desired seam line.

has an aperture 54 subfor supporting said swivel-head for free swinghorizontally with the After the stitching operation has been completed, the thread-chain may be conveniently severed by pushing upon the knob 53 of the cutter-actuating lever.

Having thus set forth the nature of the invention, what I claim herein is:-

1. An outfit for stitching the mouths of filled sacks and like articles, comprising a horizontally disposed bracket, -a sewing machine carried by one end of said bracket and having stitch-forming mechanism including a substantially horizontally reciprocatory needle, an electric motor carried by the end of said bracket horizontally opposite to the sewing machine end thereof, driving connections between said electric motor and sewing machine, a swivel-joint having one member pivotally connected with said bracket between the sewing machine and motor, and a suspended cable connected with the other member of said swivel-joint.

2. An outfit for stitching the mouths of filled sacks and like articles, comprising a horizontally disposed bracket, a sewing machine carried by one end of said bracket and having stitch-forming mechanism including a substantially hori- ,zontally reciprocatory needle, an electric motor and sewing machine, a swivel-hook pivotally connected to said bracket between the sewing machine and motor, a swivel-block in which said hook is rotatably journaled,'a swivel-head providing a pivotal support for said block, and means ing movementsof said sewing machine and motor carrying bracket.

3. An outfit for stitching the mouths of filled saks and like articles, comprising a bracket having substantially'parallel and vertically disposed end-plates connected by a cross-bar, a sewing machine having its base mounted upon one of said end-plates in a substantially horizontal position of the sewing machine needle, an electric motor mounted upon the other end-plate of said bracket, driving connections between said motor and sewing machine, a cable having one end connected with said cross-bar between the sewing machine and motor, a cable sheave disposed above said bracket, and a sewing machine and motor counterbalance connected with the other end of said cable.

4. An outfit for stitching the mouths of filled sacks and like articles, comprising a bracket having substantially parallel and vertically disposed end-plates connected by a cross-bar, a sewing machine having its base mounted upon one of said end-plates in a substantially horizontal position of the sewing machine needle, said sewing machine having a vertically disposed main shaft 1 5 provided with adjacent fast and loose belt-pulleys, an electric motor mounted upon the other end-plate of said bracket and having a belt-pulley, a belt connecting the motor pulley with the loose pulley of the sewing machine, means for shiftingsaid belt from said loose pulley to the pulley fastupon the sewing machine main shaft, and means for supporting said bracket for free swinging movements thereof with said sewing machine and motor.

5. An outfit for stitching the mouths of filled sacks and like articles, comprising a sewing machine and an electric motor rigidly connected and having vertical axis belt-pulleys disposed in substantially the same horizontal plane, an idlerpulley adjacent to the sewing machine pulley, a belt connecting the motor and idler pulleys, a belt-shipper lever operable to shift said belt -from said idler-pulley to the sewing machine pulley, a hand rod projecting from said beltshipper lever, a hand-bar rigid with said sewing machine disposed adjacent to said hand-rod for simultaneous engagement of said hand-bar and hand-rod by one hand of an operator, a cable suspending said sewing machine and motor for free swinging movements thereof as a unit, and cable-supporting means including a cable-sheave and a sewing machine and motor counterbalance.

6. An outfit for stitching the mouths of filled sacks and like articles, comprising a bracket having substantially parallel and vertically disposed end-plates connected by a horizontally disposed intermediate cross-bar, a sewing machine having its base mounted upon one of said end-plates in a substantially horizontal position of the sewing machine needle, said sewing machine having a vertically disposed main shaft provided with adjacent fast and loose belt-pulleys, an electric motor mounted upon the other end-plate of said bracket and having a vertical-axis belt-pulley, a belt connecting the motor pulley with the loose pulley of the sewing machine, means for supporting said bracket for free swinging movements thereof with said sewing machine and motor in horizontal balance, a hand-bar rigid with said sewing machine, a belt-shipper lever piv-- otally mounted upon said bracket and having a tric motor rigidly connected to said sewing machine, driving connections from said motor to the sewing machine, means for pivotally supporting said sewing machine and motor in horizontal balance, a thread-supply stand supported by said connected sewing machine and motor, and a counterweight carried by said stand shift.- able into positions for maintaining the horizontal balance ofthe sewing machine and motor as the weight of the thread supply varies.

8. An outfit for stitching the mouths of filled sacks and like articles, comprising a horizontally disposed bracket, a sewing machine carried by said bracket and having stitch-forming mechanism including a horizontally reciprocatory needle, an electric motor carried by said bracket in a position horizontally opposite to said sewing machine, driving connections between said motor and sewing machine, a free swinging support pivotally connected with said bracket holding the sewing machine and motor in horizontal balance, a thread stand rising from said bracket at one side of the pivotal connection of the support therewith and carrying thread-supply supporting means at the opposite side of said pivotal connection, and a counterweight carried by said stand shiftable into positions for maintaining the horizontal balance of said sewing machine and motor as the weight of the thread supply varies.

9. An outfit for stitching the mouths of filled sacks and like articles, comprising a sewing machine having stiteh-forming mechanism including a horizontally reciprocatory needle, an electric motor rigidly connected to said sewing machine, driving connections between said motor and sewing machine, a suspended cable pivotally supporting said sewing machine and motor in horizontal balance for free swinging movements, a thread-chain cutter disposed rearwardly of the needle-path, and a manually operable thread-cutter actuating lever fulcrumed upon and overhanging said sewing machine.

IRVING F. WEBB. 

